Desolventizing mechanism for producing mesitylene

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By incorporating an air inlet pipe, an annular pipe, and a heat-conducting plate into the jacket of the desolventizing vessel, the problem of uneven heating in the desolventizing vessel was solved, achieving more uniform heating and temperature control.

CN224056673UActive Publication Date: 2026-03-31SHANDONG YANGPU CHEMICAL TECHNOLOGY CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2025-04-17
Publication Date: 2026-03-31

AI Technical Summary

Technical Problem

The heating in the existing desolventizing reactor for mesitylene production is not uniform enough, resulting in uneven heat distribution.

Method used

The jacket of the desolventizing vessel is equipped with structures such as an inlet pipe, a first annular pipe, a connecting pipe, a heat-conducting plate, a second annular pipe, and an outlet pipe. Steam is evenly conducted to the inside of the jacket through these structures, and the temperature is controlled by observing the discharge of condensate through an observation component.

Benefits of technology

This results in more uniform heating of the desolventizing vessel, improves heat utilization efficiency, and makes it easier for operators to control the temperature.

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Abstract

The utility model relates to the technical field of desolventizing mechanisms, in particular to a desolventizing mechanism for producing mesitylene, which comprises a desolventizing kettle, a kettle cover is arranged at the top end of the desolventizing kettle, the kettle cover is mounted at the top end of the desolventizing kettle through a mounting component, a feeding valve is mounted at the top end of the kettle cover, a bottom probing pipe is vertically mounted at the bottom end of the feeding valve, and the bottom probing pipe is connected with the desolventizing kettle. According to the steam desolventizing kettle, by arranging the jacket, the air inlet pipe, the first annular pipe, the connecting pipe, the heat conducting plate, the second annular pipe, the air outlet pipe, the drain valve and the water outlet pipe, when the desolventizing kettle is heated, the steam generating device is started, and at the moment, steam enters the first annular pipe, the connecting pipe and the second annular pipe through the air inlet pipe; heat of steam is uniformly conducted to the inner side of the jacket through the heat conducting plate and the connecting pipe, most of the steam is discharged through the air outlet pipe and is uniformly blown to the inner side of the jacket, so that the jacket and the desolventizing kettle are slowly heated, the heat of the steam can be uniformly guided into the jacket and the desolventizing kettle through the design, and the desolventizing kettle is more uniformly heated.

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Description

Technical Field

[0001] This utility model relates to the technical field of solvent removal mechanisms, specifically a solvent removal mechanism for producing mesitylene. Background Technology

[0002] Mesitylene is a colorless liquid with a characteristic odor. It is insoluble in water but soluble in organic solvents such as ethanol, ether, and benzene. Mesitylene is an important organic chemical raw material with wide applications in industrial production. It can be used to produce trimesic acid and as an antioxidant, epoxy resin curing agent, polyester resin stabilizer, and alkyd resin plasticizer. In the electronics industry, it is also used as a developer for silicone photographic films. In the production process of mesitylene, a solvent removal vessel is required for solvent removal.

[0003] Desolventizing reactors for mesitylene production are widely used. Existing desolventizing reactors are usually heated by steam using a jacket. However, the steam inlet pipe of the jacket in existing equipment is usually located at the top of the jacket. When using steam heating, the steam entering the jacket from the inlet pipe can only heat the upper part, resulting in uneven heating. Therefore, a desolventizing mechanism for producing mesitylene is proposed to address the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a solvent removal mechanism for the production of mesitylene, so as to solve the problem of uneven heating in existing devices mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A solvent removal mechanism for producing mesitylene includes a solvent removal vessel. The vessel has a lid at its top, which is mounted on the top of the vessel via an assembly. A feed valve is installed at the top of the lid, and a vertically arranged bottom probe is installed at the bottom of the feed valve. An vent valve is installed on one side of the feed valve, mounted on the top of the lid, and a safety valve is installed on the other side of the vent valve, mounted on the top of the lid. A discharge valve is installed at the bottom of the solvent removal vessel. A jacket is fixedly connected to the outside of the solvent removal vessel. An air inlet pipe is installed through the jacket, and a first annular pipe is installed at one end of the air inlet pipe. A vertically arranged connecting pipe is installed at the top of the first annular pipe, and a second annular pipe is fixedly connected to the top of the connecting pipe. An air outlet pipe is installed at the bottom of the second annular pipe. A drain valve is installed on the outside of the first annular pipe, and a water outlet pipe is installed at the bottom of the jacket.

[0007] Preferably, the first annular tube and the second annular tube are the same in shape and size, and the first annular tube and the second annular tube are located inside the jacket and are fixedly connected to the inside of the jacket.

[0008] Preferably, a heat-conducting plate is fixedly connected to the outside of the connecting pipe, and there are multiple heat-conducting plates that are evenly distributed between the connecting pipes.

[0009] Preferably, there are multiple vent pipes, which are evenly distributed at the bottom of the second annular pipe, and the vent outlets of the vent pipes are inclined toward the desolvation vessel.

[0010] Preferably, the opening of the air inlet pipe is inclined upward, and the openings of the drain valve and the water outlet pipe are both inclined downward.

[0011] Preferably, the mounting assembly includes a mounting hole that is opened at the inner edge of the vessel lid and vertically penetrates the vessel lid. The inner side of the mounting hole is provided with a threaded post that is fixedly connected to the top of the desolventizing vessel, and a nut is threadedly connected to the outer side of the threaded post.

[0012] Preferably, an observation assembly is installed on the outside of the water outlet pipe. The observation assembly includes lighting lamps that are symmetrically fixedly connected to the outside of the water outlet pipe and pass through the water outlet pipe. An observation tube that is obliquely fixedly connected to the outside of the water outlet pipe and passes through the water outlet pipe is provided between the two lighting lamps. A fixing rod that is fixedly connected to the outside of the jacket is fixedly connected to the outside of the observation tube. An observation lens is fixedly connected to the top of the observation tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, by setting a jacket, an air inlet pipe, a first annular pipe, a connecting pipe, a heat-conducting plate, a second annular pipe, an air outlet pipe, a drain valve, and a water outlet pipe, when heating the desolventizing kettle, the steam generator is turned on. At this time, the steam enters the first annular pipe, the connecting pipe, and the second annular pipe through the air inlet pipe. The heat-conducting plate and the connecting pipe evenly conduct the heat of the steam to the inside of the jacket. Most of the steam is discharged through the air outlet pipe and evenly blown on the inside of the jacket, so that the jacket and the desolventizing kettle are slowly heated. This design can evenly guide the heat of the steam into the jacket and the desolventizing kettle, making the heating of the desolventizing kettle more uniform.

[0015] 2. In this utility model, by setting up an observation component, a lighting lamp, an observation tube, a fixing rod, and an observation lens, the lighting lamp can be turned on when heating the desolventizing kettle, and the water output in the water outlet pipe can be observed through the observation lens and the observation tube until there is no obvious condensate flowing out of the water outlet pipe, at which point the heating and distillation can be stopped. This design makes it easy for the operator to observe the amount of condensate discharged, which is beneficial for controlling the temperature of the desolventizing kettle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the vessel lid installation structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the jacket installation structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the jacket connection component of this utility model;

[0020] Figure 5 This is a schematic diagram of the first annular pipe connecting component of this utility model.

[0021] In the diagram: 1. Desolventizing vessel; 2. Vessel cover; 3. Mounting assembly; 31. Mounting hole; 32. Threaded post; 33. Nut; 4. Feed valve; 5. Bottom probe pipe; 6. Vent valve; 7. Safety valve; 8. Discharge valve; 9. Jacket; 10. Inlet pipe; 11. First annular pipe; 12. Connecting pipe; 13. Heat-conducting plate; 14. Second annular pipe; 15. Vent pipe; 16. Drain valve; 17. Water outlet pipe; 18. Observation assembly; 181. Lighting lamp; 182. Observation tube; 183. Fixing rod; 184. Observation lens. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0025] Please see Figure 1-5 This utility model provides a technical solution:

[0026] A solvent removal mechanism for producing mesitylene includes a solvent removal vessel 1. A vessel cover 2 is located at the top of the vessel 1 and is mounted on the top of the vessel 1 via an mounting assembly 3. A feed valve 4 is installed at the top of the vessel cover 2, and a vertically positioned bottom probe 5 is installed at the bottom of the feed valve 4. An exhaust valve 6 is installed on one side of the feed valve 4 and on the top of the vessel cover 2. A safety valve 7 is installed on one side of the exhaust valve 6 and on the top of the vessel cover 2. A discharge valve 8 is installed at the bottom of the vessel 1. A jacket 9 is fixedly connected to the outside of the vessel 1, and an air inlet pipe 10 is installed through the jacket 9. A first annular pipe 11 is installed at one end of the air inlet pipe 10. A vertically arranged connecting pipe 12 is installed at the top of the first annular pipe 11. A second annular pipe 14 is fixedly connected to the top of the connecting pipe 12. An air outlet pipe 15 is installed at the bottom of the second annular pipe 14. A drain valve 16 is installed on the outside of the first annular pipe 11. A water outlet pipe 17 is installed at the bottom of the outside of the jacket 9. The first annular pipe 11 and the second annular pipe 14 are the same in shape and size. The first annular pipe 11 and the second annular pipe 14 are located inside the jacket 9 and fixedly connected to the inside of the jacket 9. A heat-conducting plate 13 is fixedly connected to the outside of the connecting pipe 12. There are multiple heat-conducting plates 13, which are arranged between the connecting pipes 12. The exhaust pipes 15 are evenly distributed, with multiple exhaust pipes 15 evenly distributed at the bottom of the second annular pipe 14. The exhaust ports of the exhaust pipes 15 are inclined towards the desolvation vessel 1. The opening of the exhaust pipe 10 is inclined upward. The openings of the drain valve 16 and the water outlet pipe 17 are inclined downward. The mounting assembly 3 includes a mounting hole 31 that is opened at the inner edge of the vessel cover 2 and vertically penetrates the vessel cover 2. The inner side of the mounting hole 31 is provided with a threaded post 32 that is fixedly connected to the top of the desolvation vessel 1. The outer side of the threaded post 32 is threaded with a nut 33. The assembly is connected by a jacket 9, an exhaust pipe 10, a first annular pipe 11, and a connecting... The steam generator is activated when heating the desolventizing vessel 1. At this time, steam enters the first annular pipe 11, the connecting pipe 12, and the second annular pipe 14 through the inlet pipe 10. The heat-conducting plate 13 and the connecting pipe 12 evenly conduct the heat of the steam to the inside of the jacket 9. Most of the steam is discharged through the outlet pipe 15 and evenly blown into the inside of the jacket 9, so that the jacket 9 and the desolventizing vessel 1 are slowly heated. This design can evenly guide the heat of the steam into the jacket 9 and the desolventizing vessel 1, so that the desolventizing vessel 1 is heated more evenly.

[0027] An observation assembly 18 is installed on the outside of the outlet pipe 17. The observation assembly 18 includes lighting lamps 181 that are symmetrically fixedly connected to the outside of the outlet pipe 17 and pass through the outlet pipe 17. An observation tube 182 that is fixedly connected to the outside of the outlet pipe 17 and passes through the outlet pipe 17 is obliquely arranged between the two lighting lamps 181. A fixing rod 183 that is fixedly connected to the outside of the jacket 9 is fixedly connected to the outside of the observation tube 182. An observation lens 184 is fixedly connected to the top of the observation tube 182. With the observation assembly 18, lighting lamps 181, observation tube 182, fixing rod 183 and observation lens 184, the lighting lamps 181 can be turned on when the desolventizing kettle 1 is heated, and the water output in the outlet pipe 17 can be observed through the observation lens 184 and observation tube 182 until no obvious condensate flows out of the outlet pipe 17, at which point the heating and distillation are stopped. This design makes it easy for the operator to observe the amount of condensate discharged, which is beneficial for controlling the temperature of the desolventizing kettle 1.

[0028] Workflow: Before use, install all components on the device. First, use installation component 3 to install the vessel cover 2. Place the vessel cover 2 on top of the desolventizing vessel 1, inserting the threaded post 32 into the mounting hole 31 on the vessel cover 2. Then, screw the nut 33 onto the outside of the threaded post 32 to complete the installation of the vessel cover 2. After that, connect the discharge valve 8 to the next process. Connect the feed valve 4 to the pump in the centrifugal mother liquor tank. Transfer the centrifugal mother liquor from the centrifugal mother liquor tank to the desolventizing vessel 1 through the feed valve 4 and the bottom probe pipe 5. Then, close the feed valve 4. Connect the exhaust valve 6 to the external vacuum system to begin negative pressure desolvation of the desolvation vessel 1. Open the vacuum system and adjust the vacuum level to approximately -0.08 MPa. The safety valve 7 is designed to protect the desolvation vessel 1 if the pressure exceeds the limit, preventing an explosion. Connect the inlet pipe 10 and outlet pipe 17 to the external steam generator and turn it on. Steam then enters the first annular pipe 11, connecting pipe 12, and second annular pipe 14 through the inlet pipe 10. The heat-conducting plate 13 and connecting pipe 12 will... The heat of the steam is evenly conducted to the inside of the jacket 9. At this time, some of the steam condenses into water in the first annular pipe 11, the connecting pipe 12, and the second annular pipe 14. Most of the steam is discharged through the vent pipe 15 and evenly blown into the inside of the jacket 9, causing the jacket 9 and the desolvation vessel 1 to slowly heat up. The temperature is controlled to reach 80°C. At this time, the lighting lamp 181 can be turned on, and the water discharge situation in the water outlet pipe 17 can be observed through the observation lens 184 and the observation tube 182 at one end of the fixing rod 183 until there is no obvious condensate flowing out of the water outlet pipe 17. Stop heating and distillation. After desolventizing is complete, open the feed valve 8 to discharge the material into the next process. This completes the desolventizing of the material. At this time, the drain valve 16 can be opened to discharge the residual condensate in the first annular pipe 11. The design of the first annular pipe 11, the second annular pipe 14 and their connecting components can guide the heat of the steam evenly into the jacket 9 and the desolventizing vessel 1, making the heating of the desolventizing vessel 1 more uniform. The design of the observation component 18 makes it easy for the operator to observe the amount of condensate discharged, which is beneficial to controlling the temperature of the desolventizing vessel 1.

[0029] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A production of mesitylene with a desolventizing mechanism, comprising a desolventizing kettle (1), characterized in that: The top end of the desolventizing kettle (1) is provided with a kettle cover (2), the kettle cover (2) is installed on the top end of the desolventizing kettle (1) through a mounting assembly (3), the top end of the kettle cover (2) is provided with a feeding valve (4), the bottom end of the feeding valve (4) is provided with a vertically arranged bottom probe pipe (5), one side of the feeding valve (4) is provided with an exhaust valve (6) installed on the top end of the kettle cover (2), one side of the exhaust valve (6) is provided with a safety valve (7) installed on the top end of the kettle cover (2), the bottom end of the desolventizing kettle (1) is provided with a discharging valve (8), the outer side of the desolventizing kettle (1) is fixedly connected with a jacket (9), the outer side of the jacket (9) is provided with an air inlet pipe (10) penetrating through the jacket (9), one end of the air inlet pipe (10) is provided with a first annular pipe (11), the top end of the first annular pipe (11) is provided with a vertically arranged connecting pipe (12), the top end of the connecting pipe (12) is fixedly connected with a second annular pipe (14), the bottom of the second annular pipe (14) is provided with an air outlet pipe (15), the outer side of the first annular pipe (11) is provided with a drain valve (16), the outer side of the bottom of the jacket (9) is provided with a water outlet pipe (17).

2. The desolventizing mechanism according to claim 1, wherein: The shape and size of the first annular pipe (11) and the second annular pipe (14) are the same, the first annular pipe (11) and the second annular pipe (14) are located inside the jacket (9) and are fixedly connected with the inside of the jacket (9).

3. The apparatus according to claim 2, wherein: The outer side of the connecting pipe (12) is fixedly connected with a heat conduction plate (13), the number of the heat conduction plates (13) is multiple, and the heat conduction plates (13) are uniformly distributed between the connecting pipes (12).

4. The desolventizing mechanism according to claim 3, wherein: The number of the air outlet pipes (15) is multiple, the air outlet pipes (15) are uniformly distributed at the bottom of the second annular pipe (14), and the air outlets of the air outlet pipes (15) are obliquely arranged towards the desolventizing kettle (1).

5. The desolventizing mechanism according to claim 4, wherein: The opening of the air inlet pipe (10) is obliquely arranged upwards, and the openings of the drain valve (16) and the water outlet pipe (17) are obliquely arranged downwards.

6. The desolventizing mechanism according to claim 1, wherein: The mounting assembly (3) comprises a mounting hole (31) which is vertically penetrated through the inner edge of the kettle cover (2), the inner side of the mounting hole (31) is provided with a threaded column (32) which is fixedly connected with the top end of the desolventizing kettle (1), and the outer side of the threaded column (32) is threadedly connected with a nut (33).

7. The apparatus according to claim 1, wherein the apparatus is characterized by: The outer side of the water outlet pipe (17) is provided with an observation assembly (18), the observation assembly (18) comprises two illumination lamps (181) which are fixedly connected with the outer side of the water outlet pipe (17) and penetrate through the water outlet pipe (17), an observation pipe (182) which is fixedly connected with the outer side of the water outlet pipe (17) and penetrates through the water outlet pipe (17) is obliquely arranged between the two illumination lamps (181), the outer side of the observation pipe (182) is fixedly connected with a fixed rod (183) which is fixedly connected with the outer side of the jacket (9), and the top end of the observation pipe (182) is fixedly connected with an observation lens (184).